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CO2 Diffuser Placement

6K views 4 replies 3 participants last post by  klibs 
#1 ·
Newbie here... Where is a good place to mount the CO2 diffuser? Can this be placed in the overflow?
 
#2 ·
Yes, this is an ideal location as the filter return will help push the CO2 bubbles around, aiding dissolution.

You may want to raise your water level so that the overflow does not create too much surface agitation, as that will be counterproductive (surface agitation will increase surface area of the water, leading to increased off gassing of CO2).
 
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